Gary Has $1,400 to Invest with the Goal of Having

Multiple Choice

Gary has $1,400 to invest with the goal of having $4,000 available to purchase a used car.If he can earn 12% compounded semiannually on his investment,how long will he have to wait to acquire his car?

A) Eighteen years
B) Nine years
C) Eighteen months
D) Nine months
E) Four years